Enable WebViewAccessiblityTest for OOPIF webview.

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 3312 matching lines @@
   // If this is not the root frame tree node, we're done.
   if (frame_tree_node()->parent())
     return;
 
   // For the root frame tree node, also store the AXTreeID of the focused frame.
   // TODO(avallee): https://crbug.com/610795: No focus ax events.
   // This is probably where we need to fix the bug to enable the test.
   FrameTreeNode* focused_frame_tree_node = frame_tree_->GetFocusedFrame();
   if (!focused_frame_tree_node)
     return;
-  RenderFrameHostImpl* focused_frame =
-      focused_frame_tree_node->current_frame_host();
+
+  auto* focused_frame = static_cast<RenderFrameHostImpl*>(
+      delegate_->GetFrameAtNode(focused_frame_tree_node));

[dmazzoni, 2017/02/16 00:19:02]

Maybe it'd be cleaner if you called it GetFocusedFrameIncludingGuestWebContents
or something like that
and had it take no arguments rather than taking in a FrameTreeNode
that's only halfway helpful.

[avallee, 2017/02/21 20:00:31]

Reworked to just navigate down the WebContents tree and finding one
RenderFrameHost (or null if no focus in the top WebContents).

   DCHECK(focused_frame);
   dst->focused_tree_id = focused_frame->GetAXTreeID();
 }
 
 WebBluetoothServiceImpl* RenderFrameHostImpl::CreateWebBluetoothService(
     blink::mojom::WebBluetoothServiceRequest request) {
   // RFHI owns |web_bluetooth_services_| and |web_bluetooth_service| owns the
   // |binding_| which may run the error handler. |binding_| can't run the error
   // handler after it's destroyed so it can't run after the RFHI is destroyed.
   auto web_bluetooth_service =
@@ skipping 110 matching lines @@
   // There is no pending NavigationEntry in these cases, so pass 0 as the
   // pending_nav_entry_id. If the previous handle was a prematurely aborted
   // navigation loaded via LoadDataWithBaseURL, propagate the entry id.
   return NavigationHandleImpl::Create(
       params.url, frame_tree_node_, is_renderer_initiated,
       params.was_within_same_page, base::TimeTicks::Now(),
       entry_id_for_data_nav, false);  // started_from_context_menu
 }
 
 }  // namespace content